JP2008204309A - Fire alarm with built-in light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To notify a user of exchange of a battery of a fire alarm without ignoring the battery shortage by turning on/off a lighting device. <P>SOLUTION: This fire alarm with built-in light is provided with a fire detection circuit 10 installed in a casing mounted on a hook ceiling 4 which supplies power to a lighting device 2, and mounted with a hook plug 6 of the lighting device; a control circuit 9 which determines fire from the detection level of the fire detection circuit 10; an alarm circuit; a battery 7 which supplies power to each circuit; a voltage monitor circuit 16 which detects that the output voltage of the battery 7 decreases to a predetermined voltage or less; and an electrical path cut-off means 17 which cut off an electrical path to the lighting device 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention integrates a residential fire alarm device with a lighting device, and when the battery voltage built in the fire alarm device decreases, the lighting device notifies the battery exhaustion so that the lighting device does not turn off or turn on. It relates to body fire alarms.

Conventionally, fire alarms have been used as countermeasures for detached house fires. This fire alarm device has a fire detection function for detecting heat and smoke, and a fire alarm function for performing a buzzer or sound alarm. When a fire breaks out in the house where it is installed, the fire is detected and an alarm is sounded, and the user is aware of the fire at an early stage, thereby preventing the death caused by the fire.
Some fire alarms are combined with lighting equipment, and fire alarms are performed by lighting. At this time, there is an advantage that the fire alarm can be visually appealed not only by the alarm sound but also by illumination, and even an elderly person or a hearing impaired person can understand the alarm (for example, see Patent Document 1).
In addition, many proposals have been made to integrate a fire detector into the hook ceiling of a lighting fixture (see, for example, Patent Document 2 and Patent Document 3).

JP 2006-024542 A (paragraphs 0022 to 0040, FIG. 1) Japanese Utility Model Publication No. 56-041390 (first to third pages, FIGS. 1 to 3) Japanese Utility Model Publication No. 57-092290 (pages 1 to 3 and FIG. 1)

  Residential fire alarms are powered by a battery as an internal power source so that no wiring work is required during installation and they are not affected by power outages such as disasters. This battery has a lifetime based on its capacity and needs to be replaced, for example, every 5 years. However, it is easy to forget the replacement time of the battery, and even if a warning is given for the battery voltage drop, the user must be aware of the replacement work, and it may be forgotten because it is troublesome. There is.

  The present invention has been made to solve the above-described problems. When the lighting fixture is turned off or not turned on, the user is informed that the fire alarm device has run out of battery, and the battery is not allowed to be left unattended. The purpose is to encourage exchange.

  The lighting integrated fire alarm device according to the present invention has an upper surface side attached to a hook ceiling for supplying power to the lighting fixture, and a lower surface side provided in the casing, to which the hook plug of the lighting fixture is attached, A fire detection circuit for detecting heat or smoke caused by a fire, a control circuit for discriminating a fire from the detection level of the fire detection circuit, an alarm circuit for issuing an alarm based on the output of the control circuit, and a power source for each circuit And a lighting integrated fire alarm device comprising: a voltage monitoring circuit for detecting that the output voltage of the battery has dropped below a predetermined voltage; and an electric circuit interruption for interrupting an electric circuit to the lighting fixture. And the control circuit cuts off the electric path to the luminaire by the electric circuit interruption means based on the detection output of the voltage monitoring circuit.

  In addition, an energization detection circuit that detects energization of the lighting fixture is provided, and the control circuit turns on and off the electric circuit interrupting unit based on a detection output of the energization detection circuit to temporarily turn on the lighting fixture. Temporary lighting control to be performed, or blinking control to turn on and off the electric circuit interrupting means at a predetermined cycle and blink for a predetermined time.

  Further, the electric circuit interruption means includes a rectifier circuit that rectifies the power to the lighting fixture and supplies DC power, a relay means that turns on and off the electric path to the lighting fixture, and a relay means to the relay means from the rectification circuit. And a control circuit that shuts off the electrical circuit interrupting means based on a detection output of the voltage monitoring circuit, thereby turning off the relay means and disconnecting the electrical circuit to the lighting fixture. It is to turn off.

  According to this invention, the output voltage of the battery comprises: a voltage monitoring circuit that detects that the output voltage of the battery has dropped below a predetermined voltage; and an electric circuit interruption means that interrupts the electric circuit to the luminaire. A voltage monitoring circuit that detects that the voltage has dropped below a predetermined voltage, and an electric circuit interruption means that interrupts the electric circuit to the luminaire, the control circuit based on the detection output of the voltage monitoring circuit Since the electric path to the lighting equipment is cut off by the electric circuit breaking means, the lighting equipment will be extinguished or will not turn on, so the user will be informed that the fire alarm has run out of battery, and the user will be prompted to replace the battery without leaving the battery running out. It is possible to restore the function-down state of the lighting integrated fire alarm by replacing the battery, and the fire alarm can always function.

  In addition, an energization detection circuit that detects energization of the lighting fixture is provided, and the control circuit turns on and off the electric circuit interrupting unit based on a detection output of the energization detection circuit to temporarily turn on the lighting fixture. So that the lighting fixture is normal and the battery of the fire alarm needs to be replaced. can do.

  Further, the electric circuit interruption means includes a rectifier circuit that rectifies the power to the lighting fixture and supplies DC power, a relay means that turns on and off the electric path to the lighting fixture, and a relay means to the relay means from the rectification circuit. And a control circuit that shuts off the electrical circuit interrupting means based on a detection output of the voltage monitoring circuit, thereby turning off the relay means and disconnecting the electrical circuit to the lighting fixture. Since it is turned off, the relay means can be maintained using the electric circuit on the lighting fixture side as a power source, and since the power source using the battery on the fire alarm side is not used, the battery life can be set longer.

Embodiment 1 FIG.
FIG. 1 is a schematic configuration diagram of an integrated lighting fire alarm showing Embodiment 1 of the present invention, and FIG. 2 is a block circuit diagram of the integrated lighting fire alarm.
In FIG. 1, as with the lighting fixture 2, the lighting integrated fire alarm 1 has a shape in which a housing (not shown) can be attached to a hooking ceiling 4 provided on the ceiling surface 3 on the upper surface side, and vice versa. The hook plug 6 of the lighting fixture 2 connected to the cord 5 is formed on the lower surface side of the surface so that it can be attached. Thereby, the lighting integrated fire alarm 1 is attached to the hook ceiling 4 of the ceiling surface 3 on the upper surface side, and the hooking plug 6 connected to the cord of the lighting fixture 2 is attached to the lower surface side of the lighting integrated fire alarm 1. The lighting integrated fire alarm 1 is mounted so as to be sandwiched between the hook ceiling 4 and the hooking plug 6 connected to the cord of the lighting integrated fire alarm 1. And the power supply to the lighting fixture 2 is supplied via the lighting integrated fire alarm 1. In addition, although the lighting fixture 2 is connected to the cord 5 in FIG. 1, the hooking plug 6 may be provided in the lighting fixture 2 without a cord.

  The general construction of the lighting-integrated fire alarm 1 includes an opening through which an airflow flows into the outer periphery of the housing, a detection circuit for detecting heat or smoke due to fire in the inside thereof, and a battery as a power source for operation. ing. Then, when the voltage drops due to the battery life, the electric circuit 23 connected to the lighting fixture 2 from the ceiling ceiling ceiling ceiling 4 is blocked by the relay contact r1 so that the lighting fixture 2 is turned off or not turned on. To inform the user that the battery of the integrated fire alarm 1 has run out.

  In FIG. 2, the fire-integrated fire alarm device 1 includes a battery 7 that supplies power to internal circuits to be described later, a constant voltage circuit 8 that supplies a voltage from the battery 7 at a predetermined potential, and a microcomputer. Control circuit 9 that performs fire discrimination and control of each circuit, and heat or photoelectric smoke using a thermal element such as a thermistor are detected, the output is amplified if necessary, and output to control circuit 9 The fire detection circuit 10 that performs the sound alarm via the speaker 11 by the output from the control circuit 9 when a fire is detected, and the voice synthesis circuit 12 that outputs the sound from the control circuit 9 when a fire is detected. An operation input is performed by a lighting circuit 14 for turning on the LED 13 and a switch by a push button (not shown) exposed to the outside. When the control circuit 9 detects a fire, the voice synthesis circuit 12 stops the voice alarm. Others are in the normal state includes an input circuit 15 to be tested to the operation input of the output of the audio alarm. Note that the voice synthesis circuit 12 that performs a voice alarm via the speaker 11 and the lighting circuit 14 that lights the LED 13 constitute an alarm circuit.

  In addition, the voltage from the battery 7 is monitored and a voltage monitoring circuit 16 that gives an input to the control circuit 9 when the voltage falls below a predetermined voltage; a relay contact r1 that turns on and off the electric circuit 23 that leads from the hook ceiling 4 to the lighting fixture 2; A relay Rl for switching the contact rl off and on, and a cutoff circuit 17 for cutting off the energization of the relay Rl by an output from the control circuit 9 are provided. The relay contact r1, the relay R1, and the breaking circuit 17 constitute an electric circuit breaking means.

  Next, the operation of the illumination-integrated fire alarm device according to Embodiment 1 of the present invention will be described. Normally, the voltage of the battery 7 that supplies power to each internal circuit is kept at a predetermined potential by the constant voltage circuit 8. Then, when the occurrence of a fire is detected by the fire detection circuit 10, the control circuit 9 determines whether or not it is a fire from the detection level of the fire detection circuit 10, and when a fire is determined, The voice synthesis circuit 12 issues a voice alarm via the speaker 11. At the same time, the LED 13 is turned on by the lighting circuit 14. After confirming the occurrence of a fire, the voice alarm is stopped by being input to the input circuit 15 by a switch operation using a push button. The voltage monitoring circuit 16 monitors the voltage of the battery 7.

  When the voltage drops below a predetermined voltage due to the life of the battery 7, the voltage monitoring circuit 16 inputs a voltage drop signal to the control circuit 9, and the control circuit 9 cuts off the energization to the relay Rl by the interruption circuit 17. Turn Rl off. When the relay Rl is turned off, the relay contact rl is opened, the electric circuit 23 is interrupted, and the lighting fixture 2 is not turned off or turned on. This informs the user that the lighting-integrated fire alarm 1 has run out of battery.

  As described above, the upper surface side is attached to the hook ceiling 4 that supplies power to the luminaire 2, and the lower surface side is provided in the luminaire and the hook plug 6 of the luminaire is provided, and the heat or smoke from the fire is provided in the housing. A fire detection circuit 10 that detects a fire, a control circuit 9 that determines a fire from the detection level of the fire detection circuit 10, an alarm circuit that issues an alarm based on the output of the control circuit 9, and a battery that supplies power to each circuit 7, a voltage monitoring circuit 16 for detecting that the output voltage of the battery 7 has dropped below a predetermined voltage, and a relay means for turning on and off the electrical path to the lighting fixture 2. A control circuit 9 that shuts off the shut-off circuit 17 based on the detection output of the voltage monitoring circuit 16, thereby shutting off the relay means. Then, since the electric circuit to the lighting fixture 2 is turned off, the lighting fixture 2 is turned off or not turned on, so that the user can be informed that the battery 7 has run out and can be urged to replace the battery without leaving the battery running out. The function-down state of the lighting integrated fire alarm device 1 can be recovered by battery replacement, and the lighting integrated fire alarm device 1 can always function.

Embodiment 2. FIG.
In the first embodiment, it is not possible to determine whether the power supply voltage of the fire alarm is low or the lighting fixture is faulty simply by the lighting fixture not turning off or turning on. Therefore, in this embodiment, the lighting fixture is turned on. By blinking for a predetermined time, the lighting fixture is shown to be normal.

FIG. 3 is a block circuit diagram of a lighting-integrated fire alarm showing Embodiment 2 of the present invention. FIG. 3 is the same as FIG. 2 of the first embodiment except that the timer 25 is provided.
In this configuration, the voltage monitoring circuit 16 outputs a voltage drop signal to the control circuit 9 when the voltage drops below a predetermined voltage due to the life of the battery 7. When the control circuit 9 is lit, the control circuit 9 turns on and off the shut-off circuit 17 at a predetermined period based on the output of the timer 25, turns on and off the relay Rl, and blinks to turn on the luminaire 2. Take control. The timer 25 may not be provided as an electric circuit, and the microcomputer in the control circuit 9 may process the software.

  In addition, when the lighting fixture 2 blinks, it is necessary to shut off the power supply of the lighting fixture 2 in a state where the voltage of the battery 7 remains, so there is a margin in the predetermined voltage for determining the voltage drop of the battery 7. The voltage drop is detected so that In addition, it is necessary to keep the blinking for a long time or reduce the lighting time.

As described above, the control circuit 9 performs the blinking control for turning on and off the shut-off circuit 17 and turning on and off the shut-off circuit 17 at predetermined intervals and blinking for a predetermined time, so that the lamp of the lighting fixture 2 is normal. It can be understood that it is necessary to replace the battery 7 of the fire alarm 1 with integrated lighting.
In addition, the lighting fixture 2 does not simply turn off, but flashes with the remaining voltage in the battery, so that the surrounding area becomes bright even for a predetermined period, so it is not dark and convenient. .

Embodiment 3 FIG.
In Embodiment 2, regardless of whether the lighting fixture 2 is turned on or not, if the voltage of the battery 7 is equal to or lower than the predetermined voltage, the cutoff circuit 17 is turned on and off at a predetermined cycle by the output of the control circuit 9. Since ON / OFF cannot be recognized when 2 is turned off, the battery 7 is consumed. Therefore, in the present embodiment, the lighting device is temporarily turned on or turned on / off when the lighting fixture is turned on.

  FIG. 4 is a block circuit diagram of a lighting-integrated fire alarm showing Embodiment 3 of the present invention. 4 is provided with an energization detection circuit 26 for detecting whether or not the electric path 23 to the lighting fixture 2 of FIG. 3 of the second embodiment is energized. When the energization detection circuit 26 detects energization, the signal is input to the control circuit 9 through a signal line (not shown).

  In this configuration, the voltage monitoring circuit 16 outputs a voltage drop signal to the control circuit 9 when the voltage drops below a predetermined voltage due to the life of the battery 7. When the energization detection circuit 26 detects the energization of the electric path 23 to the luminaire 2 and the luminaire 2 is turned on, the control circuit 9 temporarily turns on the cutoff circuit 17 based on the output of the timer 25, and the relay Temporary lighting control in which Rl is temporarily turned on to temporarily illuminate the lighting fixture 2, or the control circuit 9 turns on and off the interruption circuit 17 at a predetermined cycle based on the output of the timer 25 to turn on and off the relay Rl. Then, blinking control for blinking the lighting fixture 2 is performed.

  As described above, the energization detection circuit 26 that detects the energization of the lighting fixture 2 is provided, and the temporary lighting control or the blinking control is performed based on the detection output of the energization detection circuit 26. The user can be surely recognized that the battery is dead.

Embodiment 4 FIG.
In Embodiment 1 thru | or 3, in order to maintain electricity supply of the electric circuit 23 to the lighting fixture 2, the battery 7 will be consumed in order to turn ON relay R1. For this purpose, in this embodiment, the power consumed by the electric circuit interruption means for interrupting the electric circuit 23 is used as the power supply for the luminaire 2, and the consumption of the battery 7 used as a fire alarm is prevented.
FIG. 5 is a block circuit diagram of a lighting-integrated fire alarm showing Embodiment 4 of the present invention. 5, the same parts as those in FIG. 2 of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
A rectifier circuit 24 that rectifies the AC power supply of the electric circuit 23 to the lighting fixture 2 to supply DC power, and is connected between the rectifier circuit 24 and the ground, and is always on by the DC power supply from the rectifier circuit 24, and the relay The relay R2 that switches the contact r1, the switching (SW) circuit 19 that is turned on by the extinguishing signal of the control circuit 9, the photocoupler 18 that is turned on and off by the switching (SW) circuit 19, and the photocoupler 18 and the ground. In addition, even if the photocoupler 18 is turned on by being connected to the rectifier circuit 24, the current flowing to the photocoupler 18 side is maintained and the current from the battery 7 of the lighting integrated fire alarm device 1 is maintained. Is provided with a cut-off circuit 20 composed of a holding circuit 21 that keeps the relay R2 off even when the relay is stopped.

In this configuration, when the voltage drops below a predetermined voltage due to the battery life, the voltage monitoring circuit 16 inputs a voltage drop signal to the control circuit 9, and the control circuit 9 turns on the switching (SW) circuit 19 by the turn-off signal. . When the switching (SW) circuit 19 is turned on, the photocoupler 18 is turned on, a direct current from the rectifier circuit 24 flows to the ground via the photocoupler 18 and the holding circuit 21, and the current to the relay R2 is grounded, and the relay R2 Is turned off. Then, when the relay R2 is turned off, the relay contact rl is turned off, the electric circuit 23 is cut off, and the lighting fixture 2 is not turned off or turned on. This informs the user that the lighting-integrated fire alarm 1 has run out of battery.
At this time, once the direct current from the rectifier circuit 24 flows to the ground via the photocoupler 18 and the holding circuit 21, the direct current from the rectifier circuit 24 is not supplied even if the photocoupler 18 is turned off. It continues to flow to the holding circuit 21, the relay R2 is kept off, and the electric circuit 23 is interrupted, so that the lighting fixture 2 is kept from being turned off or not lit.

As described above, the electric circuit interruption means includes the rectifier circuit 24 that rectifies the power supply to the lighting fixture 2 and supplies DC power, the relay means that turns on and off the electric path to the lighting fixture 2, and the rectification circuit 24 to the relay means. And the control circuit 9 shuts off the shut-off circuit 20 based on the detection output of the voltage monitoring circuit 16 to turn off the relay means, and the electric circuit to the lighting fixture 2. 23 is turned off, so that the relay R2 for energizing the electric circuit 23 of the lighting fixture 2 can be maintained by using the electric circuit 23 on the lighting fixture 2 side, and the power source by the battery 7 on the lighting integrated fire alarm 1 side is used. Therefore, the lifetime of the battery 7 can be set longer.
Moreover, since the power supply of the electric circuit 23 side of the lighting fixture 2 and the lighting integrated fire alarm 1 side is separated by using the photocoupler 18, the operation reliability of the lighting integrated fire alarm 1 is improved. be able to.

    The cutoff circuit 20 is turned on when the switching circuit 19 is turned on based on the detection output of the voltage monitoring circuit 16 and the switching circuit 19 is turned on. Since the photocoupler 18 that cuts off the energization and the holding circuit 21 that flows the DC current from the rectifier circuit 24 to the ground and holds off the energization of the relay means even when the photocoupler 18 is turned off are provided. The relay R2 for energizing the electric path 23 of the lighting fixture 2 can be maintained by using the electric path 23 on the side of the lighting fixture 2 as the power source, and the battery 7 on the lighting integrated fire alarm 1 side is not used. The lifetime of can be set longer.

The holding circuit 21 is provided with a timer, and based on the output of the timer, the holding circuit 21 temporarily holds and releases it, and the lighting fixture 2 is temporarily turned on. By flashing the time, the user can be informed that the battery 7 has run out, and can be urged to replace the battery without leaving the battery running out.
In addition, it is needless to say that the above embodiments can be implemented by combining necessary portions.

It is a schematic block diagram of the lighting integrated fire alarm which shows Embodiment 1 of this invention. It is a block circuit diagram of the lighting integrated fire alarm which shows Embodiment 1 of this invention. It is a block circuit diagram of the lighting integrated fire alarm which shows Embodiment 2 of this invention. It is a block circuit diagram of the lighting integrated fire alarm which shows Embodiment 3 of this invention. It is a block circuit diagram of the lighting integrated fire alarm which shows Embodiment 3 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Integrated fire alarm device, 2 Lighting fixture, 4 Hook ceiling, 6 Hook plug, 7 Battery, 9 Control circuit, 10 Fire detection circuit, 12 Voice synthesis circuit, 16 Voltage monitoring circuit, 17 Shut off circuit, 18 Photocoupler, 19 switching circuit, 20 interruption circuit, 21 holding circuit, 23 electric circuit, 24 rectification circuit, 25 timer, 26 energization detection circuit, r1 relay contact, R1, R2 relay.

Claims (3)

A case where the upper surface side is attached to a hooking ceiling that supplies power to the lighting fixture, and a lower side is attached to the hooking plug of the lighting fixture, and a fire detection circuit that is provided in the case and detects heat or smoke due to a fire And a control circuit that discriminates a fire from the detection level of the fire detection circuit, an alarm circuit that issues an alarm based on the output of the control circuit, and a battery that supplies power to each circuit. In fire alarms,
A voltage monitoring circuit for detecting that the output voltage of the battery has dropped below a predetermined voltage;
An electric circuit interrupting means for interrupting an electric circuit to the lighting fixture;
With
The said control circuit interrupts | blocks the electric circuit to the said lighting fixture by the said electric circuit interruption | blocking means based on the detection output of the said voltage monitoring circuit, The lighting integrated fire alarm device characterized by the above-mentioned. Comprising an energization detection circuit for detecting energization to the lighting fixture;
The control circuit turns on and off the electric circuit interruption means based on the detection output of the energization detection circuit, and temporarily turns on the electric circuit interruption means at a predetermined cycle. The lighting-integrated fire alarm device according to claim 1, wherein blinking control for blinking for a predetermined time is performed. The electric circuit interruption means, a rectifier circuit that rectifies the power supply to the lighting fixture and supplies DC power,
Relay means for turning on and off the electrical path to the luminaire;
An interrupting circuit for interrupting energization from the rectifier circuit to the relay means;
With
2. The control circuit according to claim 1, wherein the relay circuit is turned off and the electric circuit to the lighting fixture is turned off by interrupting the electric circuit interrupting means based on a detection output of the voltage monitoring circuit. Integrated lighting fire alarm.

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